# -*- coding: utf-8 -*-
"""
基础窗口组件类 - TgBaseWidget
所有TG窗口组件的基类
"""
from PySide6.QtWidgets import QWidget, QApplication, QSizePolicy
from PySide6.QtCore import Signal


class TgBaseWidget(QWidget):
    """所有TG窗口组件的基类"""
    
    # 组件状态变化信号
    state_changed = Signal(str, object)  # 信号：状态名，新值
    
    def __init__(self, parent=None):
        super().__init__(parent)
        self._component_name = self.__class__.__name__
        self._is_initialized = False
        self._style_applied = False
        self._theme = 'default'
        self._size_hint = 'medium'
        
        # 不自动初始化，由子类手动调用
        pass
    
    @property
    def component_name(self):
        """获取组件名称"""
        return self._component_name
    
    @property
    def is_initialized(self):
        """检查组件是否已初始化"""
        return self._is_initialized
    
    @property
    def style_applied(self):
        """检查样式是否已应用"""
        return self._style_applied
    
    @property
    def theme(self):
        """获取主题"""
        return self._theme
    
    @theme.setter
    def theme(self, value):
        """设置主题"""
        if self._theme != value:
            self._theme = value
            self.apply_style()
            self.emit_state_changed('theme', value)
    
    @property
    def size_hint(self):
        """获取尺寸提示"""
        return self._size_hint
    
    @size_hint.setter
    def size_hint(self, value):
        """设置尺寸提示"""
        if self._size_hint != value:
            self._size_hint = value
            self.apply_style()
            self.emit_state_changed('size_hint', value)
    
    def setup_ui(self):
        """设置用户界面 - 子类应该重写此方法"""
        pass
    
    def apply_style(self):
        """应用样式 - 子类应该重写此方法"""
        pass
    
    def initialize(self):
        """初始化组件"""
        if not self._is_initialized:
            self.setup_ui()
            self.apply_style()
            self._is_initialized = True
            self._style_applied = True
    
    def emit_state_changed(self, state_name, value):
        """发射状态变化信号"""
        self.state_changed.emit(state_name, value)
    
    def get_style_properties(self):
        """获取样式属性字典"""
        return {
            'theme': self._theme,
            'size_hint': self._size_hint,
            'component_name': self._component_name
        }

    def process_ui_events(self):
        """Process UI events to prevent the interface from freezing."""
        QApplication.processEvents()

    def set_expanding_policy(self):
        """设置为水平和垂直扩展策略"""
        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)

    def set_expanding_minimum_policy(self):
        """设置为水平扩展、垂直最小扩展策略"""
        self.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.MinimumExpanding)

    def set_fixed_policy(self):
        """设置为固定大小策略"""
        self.setSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)

    def set_minimum_policy(self):
        """设置为最小大小策略"""
        self.setSizePolicy(QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Minimum)